Composition of matter.



UNITED 'rs PATENT OFFICE EDWARD D. KENDALL, F ELIZABETH, NEW JERSEY,ASSIGNOR OF TWENTY-TWO'ONE- HUNDREDTHS T0 DICKSON Q. BROWN,

OF NEW YORK, N. Y., AND ONE-THIRD T0 ALBERT R. LEDOUX, or CORNWALL, NEWYORK.

comrosrrron or MATTER.

No Drawing.

Specification of Letters Patent.

To all whom it may concern:

Be it known that I, EDWARD D. KEnDAIL, a citizen of the United States,residlng at Elizabeth, in the county of Union and State of New Jersey,have invented a new and useful Composition of Matter to be Used as aSubstitute for Caoutchouc, the object of my invention being to provide acheap composition capable of being vulcanized and that may be utilizedin the manufacture of ,many articles for which caoutchouc is used. Mysaid composition of matter consists of guayule, balata, asphaltum,wax-tailings,

(known also as still-wax) and sulfur or a sulfur-bearing body. Inpreparing my said composition. I preferably first soften the guayule andbalata in one vessel and theasphaltum and wa'x-tailings in anothervessel with any suitable .volatile liquid solvent (such aspetroleum-naphthas, benzol or its homologues carbon disulfid, carbontetrachlorid, etc.) and then mix all of these constituents, with theaddition of sulfur (or a suitable sulfur-bearing body) and thoroughlyincorporate thesame by energetic stirring; if thissmechanical agitationbe accompanied by the application of moderate heat, or if it beconducted in a ,current'of warm air, or for a longer period of timeunder'ordinary atmospheric conditions, the

said softening volatile solvent evaporates and leaves a caoutchouc-likemass which may be pressed or otherwise formed into different articlesand vulcanized in molds or otherwise like prepared caoutchouc which hasbeencharged with sulfur. 'After mixing the constituents of my saidcomposition and before complete evaporation of the said a solvent thecomposition is in the state of. a

viscous, adhesive mass which, being spread on cloth or canvas andexposed to air, particularly a current of warm air, loses all of thesolvent by evaporation and the cloth or canvas so prepared, before orafter being formed into useful articles, being subjected ings, thenadding guayule and balata, each in co'mminuted form, stirring. alltogether, with continued heat, until thoroughly incorand before the massshall have become cold and while it is still soft adding and forciblystirring in the required proportion of sulfur or sulfur-bearingchemical.

portions of its constituents, viz: guayule,

phaltum, twelve to twenty-four parts; waxtailings, eight to twentyparts; sulfur, two to eight parts: all by weight. These pro ortions maybe varied without departing om wax-tailings and guayule impart softnessand adhesiveness to the resulting product: larger proportions ofasphaltum and balata and particularly of sulfur give hardness;

varied uses.

I claim-- The herein described composition of matter, for use as asubstitute for caoutchouc, consisting of guayule, twenty-two parts;balata, twenty parts; asphaltum, twelve to twenty parts; sulfur, two toeight parts, substantially as described.

EDWARD D. KENDALL.

Witnesses W. It. WRUEPH,

' RonoLFo TAVANY.

ing together the asphaltum and wax-tail-' porated, then removing thesource of heat In preparing my herein described composltion I preferablyuse the following prov.

Patented July 14, 1914. 1

Application filed November 3, 1911. Serial No. 658,371.

twenty-two parts; balata, twenty parts; as-

my invention: increased proportions of twenty-four parts; wax-tailings,eight to my composition may'thus be modifiedfo'r

